Liquid-handling device



July 9 1929- w. H. scHuLzlz I 1,720,380 4 LIQUID HANDLING DEVICE Filed Feb. 17.1926

fr l

r y m u W L Dfi,

Patented July 9, 1929.

UNITED; STATES` WILLIAM H.`SCHULZE, OF CHICAGO, ILLINOIS, ASSIGNOR TO ALEMITE MANUFACTUR- ING' CORPORATION, OFl CHICAGO, ILLINOIS, A CORPORATION OF DELAWARE.

LIQU'IL-I-IANDLING- DEVICE.

vApplication led February 17, 1926. Serial No. 539,836.

My invention relates to liquid handling devices and more especially to installing means for placing such devices in aA conduit system and for removing them quickly and opening' upwardly into the inside of the filter but removed from the path of flow ot' the liquid.-y It will thus be filled with stagnant material in which sediment. and other iniconveniently for replacement., repair or purities interrupted by the iilter may settle.

cleaning.A I have illustrated my invention as applied to a iilter for gasoline.

Among the objects and `advantages of the invention may be enumerated:

First, the quick and easy removal and replacement of thefilter itself; and

Second, automatic readjustment of the conduit system by rcmovalrof the filter to prevent loss of liquid from said system due to such removal.

Further objects and advantages of the invention will become .apparent as the description proceeds.

lin the accompanying drawings:

Figure 1 is a more or less diagrammatic section of a portion ot a fuel feed system for the internal combustion power plant ot' ya. motor vehicle, indicating theapplication of my invention thereto;

Figure 2 is an enlarged section of the valve closing means .and associated parts.

In the embodiment ot the invention selected for illustration the container 10 holds a mass of liquid material to be delivered through the delivery ipe 12. ln the case ot' .a fuel feed system "or motor vehicles the container 10 will be the vacuum tank, or its equivalent, and the pipe 12 will lead to the carburetor. i,

'llhe body 14 is provided with an inlet-at 16, .an out-let to thepipe 12 at 18 and a branch openingat 20 opposite the inlet 16. llt defines the chamber 22 within which the filter 24 is housed. A neck piece 26, integrally It will be apparent that the plug` and filter constitute a. readily removable unit which may be quickly unscrewed and withdrawn at any time to clean out the accumulated sediment or to be replaced in case it is found that the filter element has broken or is otherwise unfit ior urther service.

'fo/prevent loss of the contents ot the container l() when the filter is removed, withoiit any attention on the part of the operator, l provide a valve 44 co-operating with a seat atthe upper end ofthe inlet 16 to cut oit l vcommunica-tion between the container and the chamberA 22. rlhe valve is carried by a stem 46 extending down the inlet 1G into the chamber. A compression spring 48, having abutment atl its u per end on a spider 50 and at its lower en on a cup 52 fastened on the stem 46," as by a pin 54, urges the valve toward closed position at all times. lhe

spider 50 rests in a second countersink 5G `in the bottom of the countersink 34 and has an appreciable radial clearance to allow the valve 44 to seat squarely.. l prefer to pro-l vide this clearance at the out-er edge of the spider, as clearance at the mner edge might let the valve rattle ,or buzz, when in the position ot Figure 1 and with the whole device mounted on a. support subjected to more or less vibration. u i

The stem 4 6 extends clear through the chamber 22 and axially along the branch opening 20 to abut the bottom of the cup 42 lwhen the plug is put in place. This abut- 4.0 united to the container ,140, is threaded` at 2,8 ment lifts the valve 44 when the plug and to receive the threaded end of the body 14, and a sealing gasket 30 is clamped between the outer end of the neck piece 26 and a shoulder on the body 14.'. The ilter com* `a binding strip 32 around its uppcredge. The upper end of the iilter tit-s 'snugly 1n the lirst, shallow countersink 34 in the top wall mi the chamber 22. The lower edge of the to close the valve 44 is less than Vthat necessary to unscrew theplug 38 so that the valve prises a tube of reticula-ted material having will close before the plug is completely removed, and will not be opened until after it is partially inserted.

"Without further elaboration the foregoing will so fully explain the gist of `my inventube is permanently united,'as by soldering, tion, that others. may, by applying current at 36, with the upper end of a .plufr SSOknowledge, readily adapt the same for use threaded into the opening 2O with -thjointt sealed by a gasket 40. The plug is .cupi shaped' and `delines -an inner chamber 42 under various conditions of service, Without eliminating certain features which may properly be said to constitute therlessential u l. Liquid handling' means comprising a chamber having an inlet and outlet, a branch openingyopposite said inlet, a removable plug for closing said branch opening, a tubular filter element carried by said plusr l0 to extend acrossl said chamber and separate said inlet and outlet When said plug is in place, a valve 1n said inlet, spring; means tendine' to close said valve a valve stem extendine' across said chamber inside said filter 'I3 element and formingY a mechanical contact connection between said plug and valve for holding' said valve open when said plujj` is in piace. .the inner surface of said plug' beingJ cup-shaped to form a bottom space for stagnant liquid in which sediment can accumu-V late without clogging' said filter element.

2. Liquid handling means comprisingrfa Ychamber havinlgr an inlet and an outlet, a branch opening' opposite said inlet. a removable plug for closing said branch opening', a. tubular filter element carried by said plug to extend across said chamber and separate said inlet and outlet when said plug is in place, a valve in said inlet, spring means tending/to close said valve, a valve stem extending' across said chamber inside said filter element and forming a mechanical contact connection between said plugnT and valve for holding said valve open when said plug is in place.

3. In a device of the class described, a receptacle havinY inlet and discharge openings, a hollowed plug' removably secured in the bottom of said receptacle to form a settling' chamber, a filter element secured to said plug and normally positioned between said inlet and discharge openings, a valve in said inlet opening, and resilient means engageable with the bottom of the settling' chamber and operable to close said valve upon removal ot' said .settling chamber.

4L. In a device ol' the class described, the combination oi' a body having inlet and outlet passage-ways, said body having' a drain opening, a cupped drain plug,r removably secured in said drain opening, an upwardly opening valve in said inlet passage-Way, a stem rigid with said valve and having its lower end resting in a recess in the bottom of said plug, a. collar secured to said stem and a. compression sprinpr confined between Said collar and the top of said body.

In Witness whereof, I hereunto subscribe my name this 13 day of February, 1926.

WILLIAM H. SCHULZE. 

